Halliday-cap 22-vol.3- Rar - P22 003

Transcript

3. (a) With a understood to mean the magnitude of acceleration, Newton’s second and third laws lead to
 
6.3 × 10−7 kg 7.0 m/s2 m2 a2 = m1 a1 =⇒ m2 = = 4.9 × 10−7 kg . 9.0 m/s2 (b) The magnitude of the (only) force on particle 1 is F = m 1 a1 = k  |q|2 |q1 ||q2 |
9 = 8.99 × 10 . r2 0.00322 Inserting the values for m1 and a1 (see part (a)) we obtain |q| = 7.1 × 10−11 C.